Home / 28,019.66-38,663.91-16,686.90

Finding the Fourth Proportional to 28,019.66, 38,663.91 and 16,686.90

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Solution

The fourth proportional to 28,019.66, 38,663.91 and 16,686.90 is: 23,026.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.66 : 38,663.91 = 16,686.90 : x
  2. Step 2: Convert to fraction form
    28,019.66/38,663.91 = 16,686.90/x
  3. Step 3: Cross multiply
    28,019.66x = 38,663.91 × 16,686.90
  4. Step 4: Simplify right side
    28,019.66x = 645,180,799.78
  5. Step 5: Solve for x
    x = 645,180,799.78/28,019.66
  6. Step 6: Final answer
    x = 23,026.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.